Mattress overlay



FIG. 1 is a top, perspective view of a mattress overlay showing my new design;

FIG. 2 is a top plan view thereof, the bottom being plain and unornamented;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image of that shown; and

FIG. 4 is an end elevational view thereof, the opposite end being a mirror image of that shown.

The mattress overlay is shown broken-away in the views to indicate indeterminate length and width. 

The ornamental design for a mattress overlay, as shown and described. 